<?php 
	header("Content-type: text/html; charset=utf-8");

	// $var = TRUE;
	// $var = FALSE;

	// $var = [];

	// if($var){
	// 	echo "是真的";
	// }
	// 
	$var = -9;

	$var = 9;

	$var = 565.5656;


	$str = 'sdfsdf';

	$str = <<<xbs
	"sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf'sdfsdf''sdfsdf''sdfsdf''sdfsdf'
"sdfsdfsdf""sdfsdfsdf""sdfsdf'sdfsdf''sdfsdf''sdfsdf'sdf""sdfsdfsdf""sd'sdfsdf''sdfsdf''sdfsdf''sdfsdf''sdfsdf'fsd'sdfsdf''sdfsdf''sdfsdf'fsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdfsdfsdf""sdf'sdfsdf''sdfsdf''s'sdfsdf''sdfsdf''sdfsdf'dfsdf''sdfsdf''sdfsdf''sdfsdf'sdfsdf""sdfsdfsdf"
gdfgldfkjg;lkdfsj;glksdjpoi3u4poi5u; p234iucpoi 43htpjsofhsodifhoskdfoksdjfkjsdokfj;skdjf;l ksdajf;lkajsd;lfkjsdalkfj;ksajf;lkasjdf;lkjasd;lk
xbs;

	$res = is_string($str);

	var_dump($res);

	$res = strval(56785);


	var_dump($res);















 ?>